Htykuut

I have a method in class where I call loginWindow.ShowDialog(); which brings up a Window, however when you press Close (X in top right) it doesn't Quit the application, rather continues to run whatever is below loginWindow.ShowDialog(); in that method.

How am I able to quit the application entirely if that Window is closed?

I tried to use:

    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)

    {

        e.Cancel = true;

        System.Windows.Application.Current.Shutdown();

        base.OnClosing(e);

    }

Although this didn't shut the application down, which confuses me. When I was using loginWindow.Show(); this wasn't a problem.

I don't know how your application runs, based on your sample code I have two solutions.

Solution 1:- Every window has DialogResult property. Inside the OnClosing event assign DialogResult = true; and call the Shutdown method. The windows who is responsible to call will get the result from return value of ShowDialog() method

For example:-

  private void SecondWindow_OnClosing(object sender, CancelEventArgs e)

    {

        DialogResult = true;

        System.Windows.Application.Current.Shutdown();

    }

Below event, is from the First screen, calling the Second Window.

private void Button_Click(object sender, RoutedEventArgs e)

    {

        SecondWindow secondWindow = new SecondWindow();

        var dialogResult = secondWindow.ShowDialog();

        if (dialogResult.HasValue && dialogResult.Value == false)

        {

            // any code of yours which must not be executed after the second

            // window has closed the process

       }

    }

Once, the DialogResult is assigned true, the first window will check only if it is false execute the below code or else ignore.

Solution 2:- We will get the Current Application Running Process and Kill the whole process that is your whole application.

    private void SecondWindow_OnClosing(object sender, CancelEventArgs e)

    {

        Process.GetCurrentProcess().Kill();

    }

There is a shutdown mode that you can define in the App.Xaml

The default option is OnLastWindowClosed. If it is OnExplicitShutdown than the application wants you to call Application.Shutdown(). What this means is, if you close all windows the application is still running because it is expecting a Application.Shutdown() to be called. This is an explicit shutdown.

Other two options are implicit meaning the Application.Shutdown() method will be called when the last window is closed or when the main window is closed.

Can you check what option you have defined?